Catheter with adjustable guidewire exit position

• US 10,105,517 B2
• Filed: 08/17/2015
• Issued: 10/23/2018
• Est. Priority Date: 04/27/2012
• Status: Active Grant

• Current Assignee: Teleflex Medical Incorporated (Teleflex Incorporated)
• Original Assignee: Teleflex Medical Incorporated (Teleflex Incorporated)
• Inventors: Watanabe, Gwen
• Primary Examiner(s): Gilbert, Andrew
• Application Number:
  US14/827,357
• Publication Number:
  US 20150352329A1
• Time in Patent Office: 1,163 Days
• CPC Class Codes: A61M 2025/0035 characterized by a variable lumen cross-section by means of a resilient flexible septum or outer wall
• CPC Class Codes: A61M 2025/0037 characterized by lumina being arranged side-by-side
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters
• CPC Class Codes: A61M 2025/0188 having slitted or breakaway lumens
• CPC Class Codes: A61M 25/0026 Multi-lumen catheters with stationary elements catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175
• CPC Class Codes: A61M 25/0043 characterised by structural features
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/0169 Exchanging a catheter while keeping the guidewire in place
• CPC Class Codes: A61M 25/0172 Exchanging a guidewire while keeping the catheter in place

Abstract

Catheters including those having guidewire lumens that can convert from an Over-the-Wire mode to a Rapid Exchange mode are useful and effective when this conversion happens without adjusting the position of the guidewire in a body lumen.

Claims

1. A catheter system, comprising:

a catheter comprising a catheter body, a dividing wall extending along a diameter of the catheter body, and a distensible wall parallel to the dividing wall,

the catheter defining a guidewire lumen between the distensible wall and an inner surface of the catheter body, a wire ejection lumen between the distensible wall and the dividing wall, and a therapeutic lumen opposite the guidewire lumen between the dividing wall and the inner surface of the catheter body, and

the catheter body defining a slit at least partially along the guidewire lumen; and

a guidewire configured to be inserted within the guidewire lumen of the catheter, wherein the distensible wall is configured to radially expand within the guidewire lumen when pressurized fluid is provided within the wire ejection lumen to push the guidewire out of the slit at least partially along the guidewire lumen without adjusting the lateral position of the guidewire in a body lumen.

2. The catheter system of claim 1, wherein the catheter further comprises a port at a proximal end of the catheter that is in fluid communication with the wire ejection lumen, the port being configured to receive the pressurized fluid.

3. The catheter system of claim 1, wherein the catheter further comprises a therapy device at a distal end of the catheter.

4. The catheter system of claim 3, wherein the therapy device is a balloon or a stent.

5. The catheter system of claim 3, wherein the therapeutic lumen is in fluid communication with the therapy device at the distal end of the catheter.

6. The catheter system of claim 1, wherein the therapeutic lumen is configured to deliver a therapeutic fluid.

7. The catheter system of claim 1, wherein the therapeutic lumen is an aspiration lumen.

8. The catheter system of claim 1, wherein the catheter further comprises at least two guidewire exit points, and wherein the slit is defined between the at least two guidewire exit points.

9. The catheter system of claim 1, wherein the guidewire lumen and the therapeutic lumen have similar non-circular cross-sectional profiles.

10. The catheter system of claim 9, wherein the guidewire lumen and the therapeutic lumen have D-shaped cross-sectional profiles.

11. The catheter system of claim 1, wherein the distensible wall is configured to unidirectionally expand into the guidewire lumen when pressurized fluid is provided within the wire ejection lumen.

12. A method for pushing a guidewire out of a guidewire lumen, the method comprising:

receiving a catheter system, comprising;

a catheter comprising a catheter body, a dividing wall extending along a diameter of the catheter body, and a distensible wall parallel to the dividing wall,

the catheter defining a guidewire lumen between the distensible wall and an inner surface of the catheter body, a wire ejection lumen between the distensible wall and the dividing wall, and a therapeutic lumen opposite the guidewire lumen between the dividing wall and the inner surface of the catheter body,

the catheter body defining a slit at least partially along the guidewire lumen,

a guidewire configured to be inserted within the guidewire lumen of the catheter;

causing-at least some of the guidewire to be received within the guidewire lumen of the catheter; and

providing pressurized fluid within the wire ejection lumen to radially expand the distensible wall within the guidewire lumen to cause the guidewire to release through the slit at least partially along the guidewire lumen without adjusting a lateral position of the guidewire in a body lumen.

13. The method of claim 12, wherein providing the pressurized fluid within the wire ejection lumen comprises providing the pressurized fluid via a port at a proximal end of the catheter that is in fluid communication with the wire ejection lumen.

14. The method of claim 12, further comprising delivering a therapeutic fluid through the therapeutic lumen.

15. The method of claim 12, further comprising aspirating a fluid trough the therapeutic lumen.

16. The method of claim 12, wherein the guidewire lumen and the therapeutic lumen have similar non-circular cross-sectional profiles.

17. The method of claim 16, wherein the guidewire lumen and the therapeutic lumen have D-shaped cross-sectional profiles.

18. The method of claim 12, wherein providing the pressurized fluid within the wire ejection lumen to radially expand the distensible wall within the guidewire lumen to cause the guidewire to release through the slit at least partially along the guidewire lumen comprises providing pressurized fluid within the wire ejection lumen to unidirectionally expand the distensible wall within the guidewire lumen to cause the guidewire to release through the slit at least partially along the guidewire lumen.